On-line aggregate monitoring device

Abstract

The invention belongs to an on-line aggregate monitoring device. The on-line aggregate monitoring device comprises a sampling module, a sample injection module, a dispersion module and an image acquisition and analysis module, wherein the sampling module is arranged on a feeding conveyor belt, performs sampling at a preset frequency and feeds samples to the sample injection module; the samples reach an image acquisition area of the image acquisition and analysis module through the dispersion module; and the image acquisition and analysis performs feature extraction on acquired images to obtainparameters of aggregate. The machine vision and digital image processing combined technology is adopted to realize rapid on-line detection of the granularity and the grain shape of aggregate, the aggregate grading situation of an aggregate production line can be reflected in time, and economic loss caused by unqualified granularity and quality of fine aggregate is avoided.

Description

technical field [0001] The invention belongs to the technical field of aggregate quality detection, and in particular relates to an online aggregate detection device. Background technique [0002] With the development of urban construction in our country, concrete, as an important material for infrastructure and urban construction, bears a major responsibility in the construction of new urbanization in our country. Fine aggregate is the main component of concrete, accounting for about 30% to 40% of the total volume of concrete. The reason for the current concrete performance problems is largely due to the unqualified fine aggregate quality, such as poor aggregate particle shape, poor gradation, large porosity, many needle-like particles, and high stone powder content. Unqualified fine aggregate quality will affect concrete water consumption, cementitious material consumption, durability, etc. To ensure the performance of concrete, it is not only necessary to improve the le...

AI Technical Summary

Problems solved by technology

The traditional fine aggregate gradation detection method is manual off-line screening detection, which is time-consuming and energy-consuming, and cannot reflect the particle size and distribution of fine aggregate in time, and cannot detect particle shape. When using aggregates, on the one hand, it will affect the detection accuracy of particle size, and on the other hand, it will affect the strength and quality of concrete mixture.

[0004] There are many problems in the existing concrete fine aggregate on-line detection equipment, such as time-consuming and laborious, only sampling detection, and the defects that online detection cannot be realized, the defect of aggregate particle shape detection can only be detected one by one, and there are aggregate particle size, Defects that cannot be detected simultaneously

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